2329 Orthos (1976 WA)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6533456164 ± 5.97e-09
Semi-major axis (a)2.4113099256 AU ± 1.95e-09
Inclination (i)24.46389629° ± 2.94e-07
Long. of Asc. Node (Ω)169.24806462° ± 7.20e-07
Arg. of Perihelion (ω)146.10872860° ± 9.78e-07
Mean Anomaly (M)71.29202635° ± 1.34e-06
Mean Motion (n)0.2632283887°/day ± 3.20e-10
Perihelion dist (q)0.83589116 AU ± 1.44e-08
Aphelion dist (Q)3.98672870 AU ± 1.48e-08
Orbital Period3.74437684 yr ± 4.55e-09
Physical Parameters
H (abs. magnitude)14.57
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.022″
Uncertainty0
Orbit TypeApollo
MOID0.094617 AU
Observations Used1705
Gaia Obs Used109
Oppositions30
Arc Total1976-2026
First Observation Used1976-05-31
Last Observation Used2026-03-04
Observations (1882)
Date Type RA Dec Mag Band Observatory
2013-02-14 10:32:24 C 11 58 59.70 -00 04 31.5 r 703
2013-02-15 17:43:40 C 11 58 11.34 +00 06 59.2 r D29
2013-02-15 18:19:15 C 11 58 10.33 +00 07 13.5 r D29
2013-02-15 18:46:35 C 11 58 09.52 +00 07 23.2 r D29
2013-03-05 01:44:49 C 11 43 52.08 +03 13 14.2 t 130
2013-03-05 01:47:42 C 11 43 51.96 +03 13 15.7 t 130
2013-03-05 01:50:35 C 11 43 51.84 +03 13 17.4 t 130
2013-03-05 01:53:27 C 11 43 51.71 +03 13 18.6 t 130
2013-03-05 06:45:35 C 11 43 39.79 +03 15 48.9 u 703
2013-03-05 06:58:34 C 11 43 39.25 +03 15 55.6 u 703
2013-03-05 07:11:42 C 11 43 38.67 +03 16 01.7 u 703
2013-03-05 07:24:44 C 11 43 38.13 +03 16 08.9 u 703
2013-03-08 10:44:49 C 11 40 26.191 +03 55 16.17 L F51
2013-03-08 11:05:06 C 11 40 25.284 +03 55 26.87 L F51
2013-03-08 11:25:23 C 11 40 24.380 +03 55 37.67 L F51
2013-03-08 11:45:45 C 11 40 23.473 +03 55 48.30 L F51
2013-03-13 05:23:19 C 11 35 20.32 +04 56 40.6 V G45
2013-03-13 05:43:07 C 11 35 19.36 +04 56 50.8 V G45
2013-03-13 06:16:08 C 11 35 17.79 +04 57 09.2 V G45
2013-03-13 08:06:19 C 11 35 12.66 +04 58 08.8 V G45
2013-03-13 08:59:02 C 11 35 10.24 +04 58 37.6 u G96
2013-03-13 09:06:32 C 11 35 09.88 +04 58 41.7 u G96
2013-03-13 09:11:02 C 11 35 09.69 +04 58 44.5 V G45
2013-03-13 09:14:10 C 11 35 09.52 +04 58 45.8 u G96
2013-03-13 09:21:48 C 11 35 09.16 +04 58 49.9 u G96
2013-03-14 15:17:28 C 11 33 47.27 +05 15 07.8 r D29
2013-03-14 16:02:31 C 11 33 45.13 +05 15 33.1 r D29
2013-03-14 17:05:37 C 11 33 42.14 +05 16 06.9 r D29
2013-03-15 13:59:23 C 11 32 44.65 +05 27 33.4 r D29
2013-03-15 16:59:40 C 11 32 36.14 +05 29 12.4 r D29
2013-03-15 18:56:48 C 11 32 30.60 +05 30 16.7 r D29
2013-03-19 08:18:55 C 11 28 32.55 +06 17 11.0 u G96
2013-03-19 08:25:53 C 11 28 32.23 +06 17 14.8 u G96
2013-03-19 08:32:39 C 11 28 31.90 +06 17 18.6 u G96
2013-03-19 08:39:18 C 11 28 31.58 +06 17 22.2 u G96
2013-03-20 04:48:15 C 11 27 35.42 +06 28 25.6 u 703
2013-03-20 04:53:53 C 11 27 35.10 +06 28 30.7 u 703
2013-03-20 04:59:32 C 11 27 34.81 +06 28 33.6 u 703
2013-03-20 05:05:10 C 11 27 34.56 +06 28 36.8 u 703
2013-03-20 12:59:48 C 11 27 12.48 +06 32 56.9 r D29
2013-03-20 13:24:04 C 11 27 11.25 +06 33 10.5 r D29
2013-03-20 13:48:22 C 11 27 10.09 +06 33 23.6 r D29
2013-03-20 22:26:19 C 11 26 45.78 +06 38 08.0 c A24
2013-03-20 22:27:21 C 11 26 45.82 +06 38 08.5 c A24
2013-03-20 22:28:24 C 11 26 45.79 +06 38 09.4 c A24
2013-03-20 22:29:27 C 11 26 45.61 +06 38 08.8 c A24
2013-03-20 23:28:19 C 11 26 42.77 +06 38 40.7 c A24
2013-04-01 04:37:13 C 11 14 24.18 +09 02 42.5 q H21
2013-04-01 04:40:18 C 11 14 24.06 +09 02 44.3 q H21
2013-04-01 04:43:48 C 11 14 23.90 +09 02 46.1 q H21